A study of stress concentration effect around penetrations on curved shell and failure modes for deep-diving submersible vehicle

Hsu, Ching-Yu; Liang, Cho–Chung; Shiah, Sheau-Wen; Jen, Chan-Yung

doi:10.1016/j.oceaneng.2004.05.011

Cited by 16 publications

(7 citation statements)

References 19 publications

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“…Hsu et al. 10 utilized the finite element program of Hibbitt and Karlsson to analyze the failure mode of the spherical shell with a circular hole. The static mechanical property of multiple intersecting spherical (MIS) deep-submerged pressure hulls was investigated theoretically and numerically by Wu et al.…”

Section: Introductionmentioning

confidence: 99%

“…Li et al 9 did research on nonlinear stability of a manned submersible and gave the relationship of buckling critical pressure, thickness, and radius. Hsu et al 10 utilized the finite element program of Hibbitt and Karlsson to analyze the failure mode of the spherical shell with a circular hole. The static mechanical property of multiple intersecting spherical (MIS) deep-submerged pressure hulls was investigated theoretically and numerically by Wu et al 11 Song et al 12 did further research on MIS shells and analyzed the feasibility of the hulls employed in AUVs.…”

Section: Introductionmentioning

confidence: 99%

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Kriging-based optimization design for a new style shell with black box constraints

Dong

Song

Wang

2017

Journal of Algorithms & Computational Technology

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Complex engineering applications generally have the black box and computationally expensive characteristics. Surrogatebased optimization algorithms can effectively solve expensive black box optimization problems. This paper employs the kriging predictor to construct a surrogate model and uses an initial multistart optimization process to realize the global search on this kriging model. Based on a proposed trust region framework, a local search is carried out around the current promising solution. The whole optimization algorithm is implemented to solve a new style shell design of the autonomous underwater vehicle. Based on finite element analysis, buoyancy-weight ratio, maximum von Mises stress, and buckling critical load of the new style shell are calculated and stored as expensive sample values to construct the kriging model. Finally, the better design parameters of the new shell are obtained by this proposed optimization algorithm. In addition, compared with the traditional shell, the new shell shows the stronger stability and better buoyancy-weight ratio.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Kriging-based optimization design for a new style shell with black box constraints

Dong

Song

Wang

2017

Journal of Algorithms & Computational Technology

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“…In one research study, done by Xu et al [28], a linear theory on the internal waves generated in the stratified fluid with a pycnocline was presented, and the influence of the internal wave on the flow fields at the free surface was represented by the velocity gradient fields resulting from the internal waves generated by motion of the Rankine ovoid. Hsu et al, in their study, adopted an opened shallow cylindrical shell and deep-diving submersible vehicle, GUPPY, to investigate [5]. Rapoport and Rubin showed that for penetration velocities V below a critical value Vs, the target material maintains full contact with the projectile's surface, the drag force is due solely to the resistance of plastic flow in the target, and it is independent of the velocity V [17].…”

Section: Introductionmentioning

confidence: 99%

Modeling of Flow Around a Solid Body in Free and Restricted Fluidal Media

Süner

2015

Progress in Clean Energy, Volume 1

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Design has become one of the most essential tasks for human beings throughout the history of mankind. The accurate modeling and analysis of solid bodies moving in free fluid media (such as canals) for velocity, pressure, and forces have become quite significant. In conjunction with this, it is a challenging task to design solid bodies with complex geometries and structures in multidimensional form and it needs the utmost care and attention. Moreover, it is inevitable to develop and design some new systems that will enable us to reduce the energy requirements to minimum levels because nowadays saving energy has become one of the hottest issues for attaining sustainability. In this study, energy-efficient and -effective solid bodies are designed and analyzed by developing a two-dimensional model to study the distributions of flow velocity, pressure, and forces in free and restricted environments. The generalized model solutions are achieved in MATLAB. The results are then discussed for optimum conditions.

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“…Graham [30,31] studied composite pressure hulls for deep ocean submersibles and evaluated some of the popular failure criteria. Hsu et al [32] studied the curvature effect on stress concentrations around a circular hole in the curved shell and the failure modes of the Guppy type pressure hull under external pressure loading using the finite element method.…”

Section: Introductionmentioning

confidence: 99%

Design Optimization of Composite Elliptical Deep-Submersible Pressure Hull for Minimizing the Buoyancy Factor

Fathallah

Tong

et al. 2014

Advances in Mechanical Engineering

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The design of deep submersible pressure hull's structural is one of the core technologies of submersible development of human history. Submersible pressure hulls with fiber-reinforced multilayer constructions have been developed in the recent years as substitutes for classical metallic ring-stiffened pressure hulls; strength and stability are its top priority. This paper investigates the optimum design of a composite elliptical deep-submerged pressure hull under hydrostatic pressure to minimize the buoyancy factor of the submersible pressure hull under constraints on the failure criteria and the buckling strength of the hulls to reach the maximum operating depth. The thickness and the fiber orientation angles in each layer, the radii of the ellipse, and stringers dimensions were taken as design variables and determined in the design process. The optimization procedures are performed using commercial finite element analysis software ANSYS. Additionally, a sensitivity analysis is performed to study the influence of the design variables on the structural optimum design. Results of this study provide a valuable reference for designers of underwater vehicles.

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A study of stress concentration effect around penetrations on curved shell and failure modes for deep-diving submersible vehicle

Cited by 16 publications

References 19 publications

Kriging-based optimization design for a new style shell with black box constraints

Kriging-based optimization design for a new style shell with black box constraints

Modeling of Flow Around a Solid Body in Free and Restricted Fluidal Media

Design Optimization of Composite Elliptical Deep-Submersible Pressure Hull for Minimizing the Buoyancy Factor

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